D.C. Code § 13-333
When a person non compos mentis is a party defendant in an action, process shall be served upon him personally, if within the District, and upon his committee, if there is one within the District.
Dec. 23, 1963, 77 Stat. 513, Pub. L. 88-241, § 1
1973 Ed., § 13-333.
1981 Ed., § 13-333.
Condemnation of insanitary buildings, appointment of guardian ad litem in proceedings, see § 6-909.